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  • 1
    Electronic Resource
    Electronic Resource
    The ultrahigh-peak-power laser: present and future (1997)
    Springer
    Applied physics 65 (1997), S. 205-211 
    Details
    ISSN: 1432-0649
    Keywords: PACS: 42.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: 19 to 1020-W/cm2 range. With some refinements and with superior energy storage materials, even higher peak power in the petawatt range should be possible from tabletop systems. In this paper we show the ultimate achievable power and intensity, as well as their applications in science and technology. Their applications cover a wide variety of fields, such as precision surgery, micromachining, coherent and incoherent X-ray generation, thermonuclear ignition, particle acceleration, and nonlinear quantum electrodynamics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003400050265
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  • 2
    Electronic Resource
    Electronic Resource
    Single optical cycle laser pulse in the visible and near-infrared spectral range (1999)
    Springer
    Applied physics 69 (1999), S. 207 -209 
    Details
    ISSN: 1432-0649
    Keywords: PACS: 42.65.Re
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. Since the inception of the laser, pulse duration has been continuously decreased by the use of a variety of techniques: Q-switching, mode-locking, and pulse compression. We would like to present a new technique based on the addition of laser sub-harmonic, ALS, that allows the production of a single-cycle pulse with single-femtosecond pulse duration. This simple technique takes advantage of the recent progress made in the generation of a few optical cycles and in optical parametric amplification.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003400050795
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  • 3
    Electronic Resource
    Electronic Resource
    Observation of the plasma channel dynamics and Coulomb explosion in the interaction of a high-intensity laser pulse with a He gas jet (1997)
    Springer
    JETP letters 66 (1997), S. 828-834 
    Details
    ISSN: 1090-6487
    Keywords: 52.50.Jm ; 52.20.Hv ; 42.65.Jx
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report the first interferometric observations of the dynamics of electron-ion cavitation of relativistically self-focused intense 4 TW, 400 fs laser pulse in a He gas jet. The electron density in a channel 1 mm long and 30 μm in diameter drops by a factor of approximately 10 from the maximum value of ∼8×1019 cm−3. A high radial velocity of the plasma expansion, ∼3.8×108 cm/s, corresponding to an ion energy of about 300 keV, is observed. The total energy of fast ions is estimated to be 6% of the laser pulse energy. The high-velocity radial plasma expulsion is explained by a charge separation due to the strong ponderomotive force. This experiment demonstrates a new possibility for direct transmission of a significant portion of the energy of a laser pulse to ions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.567605
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  • 4
    Electronic Resource
    Electronic Resource
    Approaches to ultrafast neutron detectors (1985)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 56 (1985), S. 1096-1097 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We discuss two approaches to obtain neutron detectors of very high temporal resolution. In the first approach, a uranium-coated cathode is used in a streak tube configuration. Secondary electrons accompanying the fission fragments from a neutron-uranium reaction are accelerated, focused through a pinhole, and streaked. Calculations show that 20-ps time resolution can be obtained. In the second approach, a uranium-coated cathode is integrated into a transmission line. State-of-the-art technology indicates that a time resolution of 20 ps can be obtained by gating the cathode with a fast electric pulse.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1138234
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  • 5
    Electronic Resource
    Electronic Resource
    The Stokes-shifted fluorescence risetime of dye molecules in solution
    Amsterdam : Elsevier
    Chemical Physics Letters 32 (1975), S. 476-479 
    Details
    ISSN: 0009-2614
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0009-2614(75)85219-5
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  • 6
    Electronic Resource
    Electronic Resource
    100 GHz traveling-wave electro-optic phase modulator (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 54 (1989), S. 1962-1964 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Dramatic bandwidth enhancement has been achieved in a GaAs traveling-wave electro-optic phase modulator by the addition of a GaAs superstrate to suppress both velocity mismatch and electrical dispersion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.101185
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  • 7
    Electronic Resource
    Electronic Resource
    Optical properties of high-quality InGaAs/InAlAs multiple quantum wells (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 3219-3225 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have measured the narrowest half-width at half-maximum photoluminescence linewidth of 2.8 meV, in 40-period lattice-matched In0.53Ga0.47As/In0.52Al0.48As multiple quantum wells, grown by molecular-beam epitaxy with growth interruption. A simple analysis of the linewidth suggests that the structure has near perfect interfaces. Temperature-dependent photoluminescence linewidth data indicate impurity incorporation due to the growth interruption. However, the high quality of the multiple quantum well is not impaired as is seen in the room-temperature absorption data, where excitonic features up to n=3 sublevel are clearly seen. Carrier lifetime in this multiple-quantum-well system has been measured, we believe for the first time, using the picosecond photoluminescence correlation technique. A lifetime of 860 ps is obtained, which is similar to the value obtained for high-quality GaAs/AlGaAs and In0.53Ga0.47As/InP quantum wells. This further confirms the high quality obtained in this ternary material system using growth interruption.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.348540
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  • 8
    Electronic Resource
    Electronic Resource
    X-ray spectroscopy of hot solid density plasmas produced by subpicosecond high contrast laser pulses at 1018–1019 W/cm2 (1995)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 2 (1995), S. 1702-1711 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Analysis is presented of K-shell spectra obtained from solid density plasmas produced by a high contrast (1010:1) subpicosecond laser pulse (0.5 μm) at 1018–1019 W/cm2. Stark broadening measurements of He-like and Li-like lines are used to infer the mean electron density at which emission takes place. The measurements indicate that there is an optimum condition to produce x-ray emission at solid density for a given isoelectronic sequence, and that the window of optimum conditions to obtain simultaneously the shortest and the brightest x-ray pulse at a given wavelength is relatively narrow. Lower intensity produces a short x-ray pulse but low brightness. The x-ray yield (and also the energy fraction in hot electrons) increases with the laser intensity, but above some laser intensity (1018 W/cm2 for Al) the plasma is overdriven: during the expansion, the plasma is still hot enough to emit, so that emission occurs at lower density and lasts much longer. Energy transport measurements indicate that approximately 6% of the laser energy is coupled to the target at 1018 W/cm2 (1% in thermal electrons with Te≈0.6 keV and 5% in suprathermal electrons with Th≈25 keV). At Iλ2=1018 W μm2/cm2 (no prepulse) around 1010 photons are emitted per laser shot, in 2π srd in cold Kα radiation (2–9 A(ring), depending on the target material) and up to 2×1011 photons are obtained in 2π srd with the unresolved transition array (UTA) emission from the Ta target. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.871318
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  • 9
    Electronic Resource
    Electronic Resource
    Development and applications of compact high-intensity lasers (1992)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 4 (1992), S. 2315-2325 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The development of compact high-intensity lasers, made possible by the technique of chirped pulse amplification, is reviewed. This includes the complexities of high-power laser implementation, such as the generation of short pulses, pulse cleaning, wide-bandwidth amplification, temporal stretching and compression, and the requirements for high-average powers. Details of specific solid-state laser systems are given. Some applications of these lasers to short-pulse coherent short-wavelength [x-ray ultraviolet (XUV)] sources are also reviewed. This includes several nonlinear effects observed by focusing a subpicosecond laser into a gas; namely, an anomalous scaling of harmonic generation in atomic media, an upper limit on the conversion efficiency of relativistic harmonics in a plasma, and the observation of short-pulse self-focusing and multifoci formation. Finally, the effects of large ponderomotive pressures (100 Mbars) in short-pulse high-intensity laser–plasma interactions are discussed, with relevance both to recombination x-ray lasers and a novel method of igniting thermonuclear fusion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.860202
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  • 10
    Electronic Resource
    Electronic Resource
    Interaction of a 1 psec laser pulse with solid matter (1991)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 3 (1991), S. 167-175 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Absorption and x-ray emission results obtained with a 1 psec pulse incident on solid targets with an intensity between 1011 and 1016 W/cm2 are presented and discussed. For I〈5×1014 W/cm2, submicron density gradient scale lengths (L/λ≤0.2) are measured and the comparison of calculated and experimental values of absorption for aluminum indicates a relatively good agreement for p polarization and noticeable differences for s polarization. X-ray conversion efficiencies have been obtained in the sub-keV and keV range. At high intensities (I〉1015 W/cm2) an evaluation of the plasma parameters is obtained from high resolution keV spectra. Finally, the results are discussed in the light of 1-D hydrodynamic simulations with time-dependent atomic physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.859934
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